Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details)

v3.20.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 29, 2020
Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period $ (2,028)  
Before tax amount (279) $ 62
Tax benefit (expense) 26 5
After tax amount (253) 67
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 14 4
Net current period other comprehensive income (loss) (239) 71
Balance at the end of the period (2,250)  
Change in pensions and other postretirement defined benefit plans    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (734) (671)
Before tax amount (19) (23)
Tax benefit (expense) 5 5
After tax amount (14) (18)
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 16 7
Net current period other comprehensive income (loss) 2 (11)
Balance at the end of the period (732) (682)
Foreign currency translation adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (1,285) (1,138)
Before tax amount (148) 80
Tax benefit (expense) 3 1
After tax amount (145) 81
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 0 0
Net current period other comprehensive income (loss) (145) 81
Balance at the end of the period (1,430) (1,057)
Unrealized gain (loss) on debt securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period 0 0
Before tax amount 0 (1)
Tax benefit (expense) 0 0
After tax amount 0 (1)
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 0 0
Net current period other comprehensive income (loss) 0 (1)
Balance at the end of the period 0 (1)
Unrealized gain (loss) on derivatives    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (9) 2
Before tax amount (95) 3
Tax benefit (expense) 18 (1)
After tax amount (77) 2
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] (2) (3)
Net current period other comprehensive income (loss) (79) [2] (1)
Balance at the end of the period (88) 1
Total attributable to Cummins Inc.    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at the beginning of the period (2,028) (1,807)
Before tax amount (262) 59
Tax benefit (expense) 26 5
After tax amount (236) 64
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 14 4
Net current period other comprehensive income (loss) (222) 68
Balance at the end of the period (2,250) (1,739)
Noncontrolling interests    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Before tax amount (17) 3
Tax benefit (expense) 0 0
After tax amount (17) 3
Amounts reclassified from accumulated other comprehensive income (loss)(1) [1] 0 0
Net current period other comprehensive income (loss) $ (17) $ 3
[1] (1) Amounts are net of tax. Reclassifications out of accumulated other comprehensive income (loss) and the related tax effects are immaterial for separate disclosure.
[2] (2) Primarily related to interest rate lock activity. See the Interest Rate Risk section in NOTE 9 "DEBT" for additional information.